Image caption, ...you've done it! The sectors rearranged into the rectangle show the area of the curved surface of the cone = π × radius × slant length.

The total surface area of an object is the area of its base and the curved surface as well. Therefore, TSA = Area of base + Area of the curved surface The amount of space covered by an object is ...

Image caption, ...you've done it! The sectors rearranged into the rectangle show the area of the curved surface of the cone = π × radius × slant length.